'Star Trek: Discovery' prosthetics supervisor James MacKinnon, right, works on Mary Chieffo's Klingon makeup, which includes three facial prosthetic pieces. The prosthetics are made of silicone. Jan Thijs, CBS

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'Star Trek: Discovery' prosthetics supervisor James MacKinnon, right, works on Mary Chieffo's Klingon makeup, which includes three facial prosthetic pieces. The prosthetics are made of silicone.
Jan Thijs, CBS